Passer aux informations produits
1 de 11

PayPal, credit cards. Download editable-PDF and invoice in 1 second!

GB/T 2585-2021 English PDF (GBT2585-2021)

GB/T 2585-2021 English PDF (GBT2585-2021)

Prix habituel $935.00 USD
Prix habituel Prix promotionnel $935.00 USD
Promotion Épuisé
Frais d'expédition calculés à l'étape de paiement.
Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GB/T 2585-2021
Historical versions: GB/T 2585-2021
Preview True-PDF (Reload/Scroll if blank)

GB/T 2585-2021: Hot-rolled steel rails for railway
GB/T 2585-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60; 45.080
H 52
Replacing GB/T 2585-2007
Hot-rolled steel rails for railway
ISSUED ON: MARCH 09, 2021
IMPLEMENTED ON: OCTOBER 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 8
4 Order contents ... 8
5 Classification ... 9
6 Dimensions, shape, weight, tolerance ... 9
7 Technical requirements ... 14
8 Test method ... 21
9 Inspection rules ... 27
10 Mark and quality certificate ... 29
Appendix A (Normative) Cross section type and size chart of steel rail... 32
Appendix B (Normative) Sample diagram for rail size inspection ... 47
Appendix C (Normative) Macrostructure organization rating chart of steel rail ... 60
Appendix D (Normative) Test method for residual stress of rail bottom ... 65
Appendix E (Normative) Test method for plane strain fracture toughness (KIC) of rails
... 67
Hot-rolled steel rails for railway
1 Scope
This standard specifies the order content, classification, size, shape, quality and
tolerance, technical requirements, test methods, inspection rules, signs and quality
certificates of steel rails for railway.
This standard applies to 38 kg/m ~ 75 kg/m symmetrical section hot-rolled steel rails
and on-line heat-treated steel rails.
2 Normative references
The following documents are essential to the application of this document. For the dated
documents, only the versions with the dates indicated are applicable to this document;
for the undated documents, only the latest version (including all the amendments) is
applicable to this standard.
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.3 Methods for chemical analysis of iron, steel and alloy - The diantipyryl
methane phosphomolybdate gravimetric method for the determination of
phosphorus content
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon
content - Reduced molybdosilicate spectrophotometric method
GB/T 223.9 Iron steel and alloy - Determination of aluminium content - Chrome
azurol S photometric method
GB/T 223.11 Iron, steel and alloy - Determination of chromium content - Visual
titration or potentiometric titration method
GB/T 223.12 Methods for chemical analysis of iron, steel and alloy - The sodium
carbonate separation-diphenyl carbazide photometric method for the determination
of chromium content
GB/T 223.14 Methods for chemical analysis of iron, steel and alloy - The N-Benzoy-
N-Phenylhydroxylamine extraction photometric method for the determination of
vanadium content
GB/T 223.18 Methods for chemical analysis of iron, steel and alloy - The sodium
thiosulfate separation iodimetric method for the determination of copper content
GB/T 223.69 Iron, steel and alloy - Determination of carbon contents - Gas-
volumetric method after combustion in the pipe furnace
GB/T 223.71 Methods for chemical analysis of iron, steel and alloy the gravimetric
method after combustion in the pipe furnace for the determination of carbon content
GB/T 223.72 Iron, steel and alloy - Determination of sulfur content - Gravimetric
method
GB/T 223.76 Methods for chemical analysis of iron, steel and alloy - The flame
atomic absorption spectrometric method for the determination of vanadium content
GB/T 223.82 Steel and iron - Determination of hydrogen content - Thermal
conductivity/infrared method after fusion under inert gas
GB/T 224 Determination of depth of decarburization of steels
GB/T 226 Low-magnification microstructure and defect acid etching test method of
steel
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room
temperature
GB/T 230.1 Metallic materials - Rockwell hardness test - Part 1: Test method
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 3075 Metallic materials - Fatigue testing - Axial-force-controlled method
GB/T 4161 Metallic materials - Determination of plane-strain fracture toughness
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element contents -
Spark discharge atomic emission spectrometric method (routine method)
GB/T 6398 Metallic materials - Fatigue testing - Fatigue crack growth method
GB/T 10561-2005 Steel - Determination of content of nonmetallic inclusions -
Micrographic method using standards diagrams
GB/T 11261 Steel and iron - Determination of oxygen content - The pulse heating
inert gas fusion-infra-red absorption method
GB/T 13298 Inspection methods of microstructure for metals
GB/T 20066 Steel and iron - Sampling and preparation of samples for the
determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content
Infrared absorption method after combustion in an induction furnace (routine
method)
GB/T 20124 Steel and iron - Determination of nitrogen content - Thermal
conductimetric method after fusion in a current of inert gas
GB/T 20125 Low-alloy steel - Determination of multi-element contents -
Inductively coupled plasma atomic emission spectrometric method
YB/T 081 Rule for rounding off of numerical values and judgement of testing values
for technical standards of metallurgy
YB/T 951 Method of the ultrasonic testing for rails
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Heat
All billets cast from one heat of molten steel until a certain billet is completely
poured from the next heat of molten steel (excluding this billet).
3.2
Sequence
Sequence of molten steel of the same designation in different heats in the tundish.
3.3
On line heat-treatment
The heat treatment process of using the waste heat of rolling to directly carry out
accelerated cooling, to obtain fine flaky pearlite structure.
4 Order contents
When ordering, the buyer shall provide the supplier with the following information:
a) Product name;
b) The number of this standard;
c) Rail type and speed grade;
6.3 Rail length and tolerance
6.3.1 Rail length
6.3.1.1 The fixed length of the standard rail is:
- The rail type of 38 kg/m, 43 kg/m: 12.5 m, 25 m;
- The rail type of 50 kg/m, 60 kg/m: 12.5 m, 25 m, 100 m;
- The rail type of 75 kg/m: 25 m, 75 m, 100 m.
6.3.1.2 The length of the curved shortened rail is:
- 12.5 m rail: 12.46 m, 12.42 m, 12.38 m;
- 25 m rail: 24.96 m, 24.92 m, 24.84 m.
6.3.1.3 The short gauge rail length is:
- 12.5 m rails: 9 m, 9.5 m, 11 m, 11.5 m, 12 m;
- 25 m rail: 21 m, 22 m, 23 m, 24 m, 24.5 m;
- 75 m rail: 71 m, 72 m, 73 m, 74 m;
- 100 m rail: 95 m, 96 m, 97 m, 99 m.
The quantity of short rails shall be negotiated by the supplier and purchaser, AND
specified in the contract. The quantity of short rails, which have an operating speed less
than 200 km/h, shall not exceed 10% of the total order quantity. The quantity of short
rails, which have an operating speed of 200 km/h and above, shall not exceed 5% of the
total order quantity. In principle, steel rails with holes shall not have short gauge rails.
After negotiation between the supplier and the buyer, short gauge rails can also be
drilled.
6.3.1.4 The length of curvilinear shortened rails for rails, which have a fixed length of
75 m and 100 m, shall be negotiated between the supplier...
Afficher tous les détails